4 Por. 
[1911] 
ill. Porifera or Spongida. 
Vosmaer, G[ualtherus] C[arel] J[acob]. 
The Porifera of the Siboga-Expedition. 
II. The genus Spirastrella. Uitkomsten 
op zool., botan., ocean., geol. gebied, 
verzameld in Ned. Indie 1899-1900 aan 
boord H.M. Siboga, onder commando 
van Lt. t-z lo Id. G. F. Tydeman, 
uitgegovon door Max Webor. [R6- 
sultats des explorations zool., botan., 
ocean., geol., entreprises aux Indes 
neerl. or. 1899-1900 a bord du Siboga 
sous le commandement de G. F. 
Tydeman, publi6s par Max Weber.] 
Livr. 59 Monogr. 0 k Leiden (E. J. 
Brill) 1911 (09) 14 pis. 41 
Vosmaer, G. C. J. Opmerkingon 
omtrent lietgoslacht Spirastrella. [Ob- 
servations on the genus Spirastrella.] 
Amsterdam Versl. Wis. Nat. Afd. K. 
Akad. Wet. 19 1911 (1243-1250) 
(Dutch) ; Amsterdam Proc. Sci. K. 
Akad. Wet. 13 1911 (1139-1146) 
(English). 42 
Weltner, W. Spongillidae des Issyk- 
Kul-Sees und des Baches bei Dschety- 
Ogus. [BeJibTnepT>, B. spongillidae 
03 epa HccLiK'B-Kyjib h pyuba itl mF- 
cthocth 7[:KGTbi-Ory8'b.] St. Peterburg 
Trav. Soc. nat. Sect. zool. 42 2 1-ere 
partie 1911 (57-76 + russ. Res. 77-88 
mit Taf. i u. 39 Fig. i. T.). 43 
Wheeler, Henry L. and Mendel, 
Lafayette B. The iodine complex in 
sponges (3, 5-diiodtyrosine). J. Biol. 
Chem. Baltimore Md. 7 1909 (1-9). 44 
Wilson, H. V. Development of 
Sponges from Dissociated Tissue Cells. 
Bulletin of the Bureau of Fisheries 
xxx 1910 Document No. 750 issued 
June 16th 1911 pp. 1-30 pis. iv 
(Washington). 45 
II.— S OBJECT— INDEX. 
GENERAL WORKS, ECONOMICS 
AND TECHNIQUE. 
Announcement of successful outcome 
of experiments in sponge culture in 
Florida ; Bowers, 7. 
La spongiculture k Tamaris ; Delage, 
10 . 
Nouveaux essais de spongiculture au 
Laboratoire maritime de Biologie de 
Tamaris-sur-Mer ; Dubois, 12. 
Bemerkungen iiber die technische 
Ausffihrung und biologischo Verwer- 
tung mikroskopischcr Messungen ; Len- 
denfeld, 24. 
General treatise on Freshwater 
sponges; Annandale, 1. 
General account of sponges ; Dendy, 
11 . 
STRUCTURE. 
Collar cells Sycon ; Huxley, 18. 
Now typo of canal system ; Kirk- 
patrick, 22. 
Clavidisc ; a form of microsclere ; 
Kirkpatrick, 22. 
Ueber den Ursprung der Microsclere 
der Desmacidoniden ; Hentschel, 16. 
Calcareous asters in Hymeniacidon 
sp., regularly arranged, below dermal 
membrane ; regarded as foreign bodies ; 
Row, 33. 
Structure of Pharetronid fibre ; Kirk- 
patrick, 21. 
Beobaclitungen fiber Reduktions- 
vorgange bei Spongilliden, nebst Be- 
merkungen zu deren ausserer Morpho- 
logie und Biologie ; Muller, 27. 
PHYSIOLOGY. 
Tho iodine complex in spongos (3, 5- 
diiod tyrosine) ; Wheeler and Mendel, 
44. 
Beobachtungen fiber Reduktions- 
vorgange bei Spongilliden, nebst Bemer- 
kungon zu deren Biologie ; Muller, 27. 
Roductionserschoinungon bei Sfiss- 
wasserschwiimmon ; Muller, 26. 
DEVELOPMENT. 
Sur les affinites des Ilalichondria et 
la classification des Halichondrines 
d’apres leurs formes larvaires ; Topsent, 
37. 
Embryology of sponges and its 
phylogenetic significance; Kemna, 20 
& 20a. 
Development of sponges from dis- 
sociated tissue cells ; Wilson, 45. 
